Why do I keep getting matrix dimensions must agree?

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Taylor Gates
Taylor Gates on 10 Jul 2018
Commented: Taylor Gates on 10 Jul 2018
I keep getting this error and I can't figure out why. Here's my code
g= 9.81
v0=[5,10,15,20];
theta= [0, .17453293, .52359878, .78539816, 1.04719755,1.57079633];
tf=2*v0.*sin(theta)/g;
t=0:0.01:tf; hold all x=v0.*(theta).*t;
y=v0*sin(theta)*t-g*t.^2/2;
hold on plot(x,y)
Matrix dimensions must agree.
Error in BallTrajectory (line 7) tf=2*v0.*sin(theta)/g;

Accepted Answer

James Tursa
James Tursa on 10 Jul 2018
Edited: James Tursa on 10 Jul 2018
>> size(v0)
ans =
1 4
>> size(theta)
ans =
1 6
So it is complaining about the v0 .* sin(theta) operation
  3 Comments
Taylor Gates
Taylor Gates on 10 Jul 2018
Yes that’s the goal. Doing multiple plots with different inputs for initial velocity and launch angle.

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